Power mining-shovel



3 Sheets-Sheet 1.

(No Model.)

G: D. WHITGOMB. POWER MINING SHOVEL.

Patented Nov. 18, 1884.

(No Model.) 3 Sheets-Sheet 2.

G. D. WHITOOMB.

POWER MINING SHOVBL. No. 308,118. Patented Nov. 18, 1884.

VIIHIJMHIH, If

Q 90 (yep-T 74011710);

jF7-arwe ys (No Model.) 3 Sheets-Sheet 3.

G. D. WHITGOMB. POWER MINING SHOVEL.

No. 308,118. Patented Nov. 18, 1884.

jiforrr ya f Ilwrrnn Srnrns ArnNr GEORGE D. \VHITOOMB, OF CHICAGO,ILLINOIS.

POWER MlNl'NG-SHOVEL.

SPECIFICATION forming part of Letters Patent No. 308,118, dated November18, 1884.

Application filed August 9. 1883. (No model.)

To all whom it may concern Be it known that I, GEORGE D. WrrrrooMB, acitizen of the United States, residing at Ohicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Power Mining-Shovels, which are fully set forth in the followingspecification, reference being had to the accompanying drawings.

My invention relates to a powershovel which is adapted to be used inmines; and it consists in the improved mechanism for raising andlowering the shovels, and the improved apparatus for adjusting theheight of the raising and loweringmechanism, and for bracing thestructure between the fi-oor and roof of the chamber in which it works,which I will now fully describe, and will afterward point out definitelyin the claims.

In the drawings, Figure 1 represents a side elevation of my powermining-shovel; Fig. 2, atransverse view taken on the line a: a, Fig. 1;Fig. 3, a vertical central sectional view taken on the line y 3 Fig. 2;Fig. 4., a transverse sectional view taken on the line 2 2, Fig. 1. Fig.5 is a cross-section of the lower end of the cylinder for raising andlowering theshovel. Fig. 6 is a transverse vertical section taken on theline w 10, Fig. 2. Fig. 7 is a longitudinal sectional view of one of theshovel-cylinders. Fig. 8 is an enlarged detail view of one end of thepart shown in Fig. 7, and Fig. 9 is a vertical sectional view of thelocking device of the shovel.

In the accompanying drawings, A represents the wheels which support mymachine.

B denotes the central post on which the operative machinery issupported. It has an upright cylindrical socket which receives thecylinder 1).

O are pointed screws, which pass through the frame to the fioor or earthto hold the machine in position. (See Figs. 3 and 6.) D are twocylinders, supported on ,trunnions D, which are supported by means oftheir connecting-piece a, (which is made in the form of a hollowcylinder surrounding the cylinder 7),) on the top of the central post,B,'so as to rotate laterally thereon. This connection ad- 5o mits ofthese cylinders D being vibrated ver- 1 tically as well as horizontally.I call these cylinders shovel-cylinders, because they operate the handleof the shovel. The handles or rods F extend into and are held by thecylinders E. 7

G are locking devices that look and firmly secure the rods F in thesocket or cylinders E at any desired position.

If it is desired to work the shovel at a great distance from the frameof the machine, the locking devices G are loosened and the rods F aredrawn out of the cylinders or sockets E.

H is a pipe for admitting steam or compressed air into the cylinder D.Behind the pistons are telescoping cylinders E, to give the shovel itsforward stroke in shoveling coal and other like articles.

I is a similar pipe for admitting steam or compressed air into thecylinder D, to give the shovel its backward stroke. exhaust the steam orair through the same ports, the cock in the pipes being opened andclosed for the purpose of admitting and exhausting.

It will be observed that to one end of the cylinder E, I attach a packedpiston-head, E, which receives steam on each side to throw I admit andthe cylinder E back and forth in the cylinder D, for the purpose abovedescribed.

J is a vertical cylinder, carrying the piston K. This cylinder is openat its lower end, and receives steam only above the piston K. Thecylinder J is suspended from the crosstree L, and the cross-tree L isfirmly secured to the cylinder M, and the piston-rods N carry thepulleys O.

P is a rope or chain which is attached to the shovel-holder S.

U are pulleys attached to the cross-tree L, over which this rope orchain passes, and it passes also under the pulley 0 up to the pulley orwheel .V, where it is firmly secured. The wheel V is provided with aretainingpawl, as shown in Fig. 1, which prevents it from turning so asto let out the cord unless the pawl is lifted. It can, however, withoutlifting the pawl, be turned so as to, take up any slack that may occur.It serves thus to regulate exactly the length and tautness of the cordas and whenever the operator may;

desire. 7,

By admitting steam or'compressed air into the cylinder J abovethe pistonKit is thrown down into the cylinder, carrying with it the pulleys O,and through the ropes or chains P the shovel is raised by turning thecylinders D on their trunnions to any desired height. By allowing thesteam to exhaust, the gravity of the shovel on its load carries it backto any desired position. The center post, a, supports the cylinder 1),which is firmly secured thereto and held in a vertical position. Thepiston c of this cylinder carries the cylinder M.

When compressed air or steam is admitted into the lower end of thecylinder b,the cylinder M is raised, lifting the cross-tree L with thecylinder J to any desired height. This cylinder M carries a stay-piece,e, which is intended to be projected solidly against the roof of themine to hold the machine solidly in position when it is being operated.

f is a locking device composed of set-screw and collar, or other similarappliances, for locking the piece a to the cross-tree L. By looseningthe set-screw f this piece 6 can be raised in the cylinder M nearly itsentire length, and when in that position by raising the piston c it canbe made to reach the roof of a mine in a very high room by throwing itinto the position shown in Fig. 3, and by allowing the steam or air toexhaust from the cylinder b the machine can be taken into a very lowspace and operated with the same facility.

g is the pipe for admitting air into the cylinder b. It is provided withair-cocks, so that the air can be admitted or allowed to exhaust atpleasure. By admitting the air into the cylinder I) through the pipe 9the cylinder M is raised until the piece strikes the wall or ceilingofthe mine, and in connection with the pointed screws 0 the machine isfirmly held in the desired position. The operator regulates the strokeof the piston K in its cylinder so as to throw the shovel to the desiredposition to make its stroke to take the load. He then admits steam orcompressed air into Jhe cylinders D through the inlet-pipe H, and causesthe cylinders E to make the forward stroke carry the shovel forward withgreat force. The air is then let into the cylnder J above the piston K,when. the shovel s raised with its load to any desired height )y turningthe cylinders D upon their truniions D.

h is a tripping-cord which operates the lockng device 2', to hold theshovel in position to :eep its load. The shovel j is hung on trunllOlJSor lugs k. When the tripping-cord h is )ulled, it unlocks the lockingdevice The hovel j throws on its trunnions 7c and dumps ts load.

It will be observed that the shovel may be wung around laterally at anydesired position 0 carry the coal which is taken from the botam of themine by the shovel 7' all around over the Wagon by turning the cylinderD on the trunnions D, and revolving the trunnions around on thecenter'post, a, as above described.

m is a cord passing over the pulley n, attached to the shovel, down tothe shovelholder S, by which the operator places the shovel back in aposition to be locked for receiving and holding its load. When theshovel has been dumped, the compressed air is allowed to exhaust throughthe pipe H, and is let into the pipe I, which throws the cylinders Eback in the cylinders D, thus bringing the shovel back into a positionto make a stroke for another load. The trunnions or lugs k are so placedon the shovels j, and they are so connected to the shovel-holder S, thatthe shovel always dumps over its front, what I call dumping forward.This enables me to dump the shovel when very near the roof of themine,and enables me also to operate the shovel in a very shallow space. ThisI consider very important.

It will be observed that I can run my machine into a mine on a track,and operate the shovels on all sides of the frame, and se cure it to anydesired place, and operate the shovels to shovel coal at any side of theframe, and dump the coal upon the mine wagon or truck at any other sideor at any height it happens to be. The telescopic shovel-cylinders Dwill operate to give the shovel its thrust in any position, and theother operating parts will operate equally well whatever the directionfrom the truck or frame it isdesired to operate the shovel.

I can secure my machine firmly in place in various heights of mines. Ican operate my shovel at any desired distance from the truck, andregulate it by the telescoping of the rodsF into the cylinders E.

I have made a compact, cheap, and eificient machine, which has greatcapacity for accomplishing the work for which it is desired.

Having thus described my invention,what I claim as new, and wish toprotect by Letters Patent, is

1. In a power mining-shovel, the upright cylinder b, the cylinder M,arranged therein, and provided with the piston c, the stay-piece IIO 6,adj ustably set in the upper part of the cylinder M, the cross-tree L,rigidly set upon the cylinder M, and mechanism suspended from saidcross-tree for raising and lowering the shovels, all in combinationsubstantially as and for the purpose described.

2. The cylinder J, the piston K,

pulleys O, cross-tree L,

and suitable mechanism for raising and lowering the shovel, as specifiedand shown.

3. The frame B, screws 0, cylinder 1), the cylinder M, and piece e, forholding the machine solidly in position, as above specified and shown.

4. In a power mining-shovel, the cross-tree L, cylinder J, the verticalcylinders 71 and M, to take up the slack of the rope or chain and I0 andpiston 0, when the cross-tree is securely regulate its length, so as tohave it operate attached to the part connected with the piswithin thedesired scope vertically, as speciton1 c, which operates to throw thecross-tree fied and shown. an cylinder M to any desired heightsubstantially as described. 7 GEORGE WHITOOMB' 5. The cylinder J, pistonK, and pulleys O Witnesses: and U, the drum or spool V, and shovel- M.I. HAMMILL, holder S, the drum or spool V being adapted W. O. GORLIES.

